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backend.h File Reference

Different backends that can be used by device drivers. More...

#include <stdlib.h>
#include <common/xmlt.h>

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Functions
void *	backend_create_handle (xml_node *config, const char *name)
	Create a backend handle.
int	backend_send (void *handle, const char *data, size_t len)
	Send some data over the backend.
void	backend_free_handle (void *handle)
	Close backend handle and free the memory.

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Detailed Description

Different backends that can be used by device drivers.

This header file defines a uniform API for sending data over serial, parallel, USB, and I2C ports, as well as a curses window for those who want to test FreeLCD without an LCD.

Definition in file backend.h.

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Function Documentation

void* backend_create_handle (  xml_node *    config, const char *    name )

Create a backend handle. The XML configuration data is the part of the central config file enclosed within <backend> tags. Parameters: config  Part of the configuration file, root tag is normally <backend>. name  Name of this backend. Returns: Pointer to backend handle. Definition at line 306 of file backend.c.

void backend_free_handle (  void *    handle )

Close backend handle and free the memory. Parameters: handle  Handle returned by backend_create_handle. Definition at line 344 of file backend.c.

int backend_send (  void *    handle, const char *    data, size_t    len )

Send some data over the backend. Parameters: handle  Handle returned by backend_create_handle. data  Pointer to the data to send. len  Amount of data to send. Returns: Zero if operation failed, nonzero if it succeeded. Definition at line 332 of file backend.c.

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